/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Description
	Solver for diagonal matrices.

\*---------------------------------------------------------------------------*/

#include "BlockDiagonalSolver.H"
#include "BlockSolverPerformance.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

//- Construct from matrix
template<class Type>
Foam::BlockDiagonalSolver<Type>::BlockDiagonalSolver
(
	const word& fieldName,
	const BlockLduMatrix<Type>& matrix,
	const dictionary& dict
)
:
	BlockLduSolver<Type>(fieldName, matrix, dict)
{}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

template<class Type>
Foam::BlockSolverPerformance<Type>
Foam::BlockDiagonalSolver<Type>::solve
(
	Field<Type>& x,
	const Field<Type>& b
)
{
	CoeffField<Type> dD = inv(this->matrix_.diag());

	multiply(x, b, dD);

	return BlockSolverPerformance<Type>
	(
		this->typeName,
		this->fieldName(),
		pTraits<Type>::zero,
		pTraits<Type>::zero,
		0,
		true,
		false
	);
}


// ************************************************************************* //
